Osteology of the Skull

Question 1

What are the 8 bones of the neural cranium?

Answer 1

frontal
parietal-2
temporal-2
occipital
sphenoid
ethmoid

Question 2

what are the 14 bones of the facial skeleton

Answer 2

maxillae-2
zygomatic-2
palatine-2
inferior concha-2 
nasal-2
lacrimal-2
vomer
madible

Question 3

what are the six bones of the middle ear

Answer 3

malleus-2
incus-2
stapes-2

Question 4

what type of joint are the majority of the skull bones

Answer 4

fibrous ( synarthrosis) sutural joints

Question 5

Name two synovial joints of the skull

Answer 5

temporo-mandibular jt

ear ossicles

Question 6

what bones are connected by the coronal suture

Answer 6

frontal and parietal

Question 7

what bones are connected by the sagittal sutures

Answer 7

left and right parietals

Question 8

what bones are connected by the lambdoidal sutures

Answer 8

occiput and parietal

Question 9

what type of suture are the coronal, sagittal and lambdoidal sutures classified as

Answer 9

serrated sutures

Question 10

what bones are connected by the squamosal suture

Answer 10

squamosal portion of temporal and parietal

Question 11

what is the vertex

Answer 11

top most portion of the head

Question 12

what is the bregma

Answer 12

junction b/t coronal and sagittal sutures

Question 13

what is lambda

Answer 13

junction b/t sagittal and lambdoidal sutures

Question 14

what are the parietal eminences

Answer 14

ridge on side of head

Question 15

what are the superciliary arches

Answer 15

ridge along superior border of orbit

Question 16

what is the glabella

Answer 16

prominence along the bridge of nose

Question 17

what is the capacity of the cranial vault

Answer 17

1500cc

Question 18

what are the borders of the anterior cranial fossa

Answer 18

orbital plates of the frontal bone
cribriform plate of the ethmoid bone
lesser wings of the body of the sphenoid
anterior clinoid process

Question 19

what two landmarks are found in the cribriform plate

Answer 19

cribriform foramina- where CN1 passes through

crista galli- crest of bone on midline

Question 20

what are the borders of the middle cranial fossa

Answer 20

greater wings of the sphenoid
body of the sphenoid
	including: sella turcica
				hypophyseal fossa
Temporal bones
	including: squamous portion 
			petrous portion

Question 21

what passes through the optic canal

Answer 21

CN2 -optic n

opthalmic artery

Question 22

what passes through the superior orbital fissure

Answer 22

CN3- occulomotor
CN4- trochlear
CN6- abducents
V1 Branch(CN5)- Opthalmic

Question 23

what passes through the foramen rotundum

Answer 23

V2 branch(CN5)- maxillary

Question 24

what passes through the foramen ovale

Answer 24

V3 Branch(CN5)- mandibular n

Question 25

what passes through the foramen spinosum

Answer 25

middle meningeal artery (entering the cranial cavity)

Question 26

What is unique about the foramen lacerum

Answer 26

It is closed by fibrocartilage The carotid canal opens into this cavity Therefore the the carotid artery passes ACROSS the foramen lacerum

Question 27

What are the borders of the posterior cranial fossa

Answer 27

``` occipital bone petrous portion of the temporal bone body of the sphenoid including: dorsum sella posterior clinoid process ```

Question 28

What is contained within the internal auditory meatus

Answer 28

CN7-Facial CN8- vestibulocochlear internal auditory artery

Question 29

What is contained within the jugular foramen

Answer 29

CN9-glossopharyngeal CN10- Vagus CN11- spinal accessory internal jugular vein

Question 30

what is contained in the foramen magnum

Answer 30

spinal chord to brainstem transition vertebral arteries spinal root of CN11-spinal accessory

Question 31

What is contained in the hypoglossal canal

Answer 31

CN12- Hypoglossal

Question 32

What is contained in the condylar canal

Answer 32

(variable) | Emissary veins